Shower door rollers, wheels for shower cabins, shower enclosures, shower cubicles, and steam showers. Can be used on most straight or curved glass shower enclosures. Sold in a set of 8 high-quality rollers, as shown at the photo. Model: B17; The rollers are affixed to the top and bottom of shower doors in order to provide smooth running when you open and close your shower doors. Irrespective of brand and cost of the shower cabin, shower door rollers are the most common spare part to fail, therefore almost certainly needing replacements during the life span of the shower. Our shower door rollers are made of high-quality materials and fitted with anti-rust brass bearings that ensure the spare parts last longer. For further dimensions or information please ask!